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CXA3218N
Demodulator BS/CS availability this product, please contact sales office.
Description CXA3218N video signal demodulation satellite broadcasting. This most functions required demodulation, provides stable video detection combination with CXA3108Q (L-band down converter with PLL). Features Built-in Excellent DG/DP characteristics Keyed input support MUSE reception control output Single power supply operation Applications PAL/NTSC system tuners, etc. Structure Bipolar silicon monolithic SSOP (Plastic)
Absolute Maximum Ratings (Ta=25 Supply voltage -0.3 Storage temperature Tstg +150 Allowable power dissipation 1000 Operating Conditions Supply voltage Operating temperature
Topr
4.50 5.50
Sony reserves right change products specifications without prior notice. This information does convey license implication otherwise under patents other right. Application circuits shown, any, typical examples illustrating operation devices. Sony cannot assume responsibility problems arising these circuits.
E98X25-TE
CXA3218N
Block Diagram Configuration (Top View)
AGCCNT
OSCGND
VCODR1
OPAOUT
AGCLPF
OPAINN
OPAINP
OSCB2
OSCE2
OSCE1
OSCB1
IFAGC
LPFN
LPFP
1AGC
2AGC
DCAMP AGCAMP
MTRX
MTRXAGC
OFFSET
DETOUT
VREG
GCONT
AFTDWN
AFTUP
KEYEDIN
VCODR2
CXA3218N
Description Symbol Typical voltage Equivalent circuit Description
MTRXAGC
detection block MTRX-AGC analog output.
Positive power supply.
2.3V
block input.
Ground.
OFFSET
block offset adjustment.
DETOUT
2.45
DETAMP block video output.
VREG
Reference voltage output. Connect with capacitor.
CXA3218N
Symbol
Typical voltage
Equivalent circuit
Description
GCONT
2.7V
DETAMP block gain adjustment.
AFTDWN
block digital output.
AFTUP
block filter. Connect with capacitor.
2.5V
KEYEDIN
block keyed input.
block sample-and-hold signal output. Connect with capacitor.
CXA3218N
Symbol
Typical voltage
Equivalent circuit
Description
VCODR2
detection output.
VCODR1
OSCGND OSCB1 OSCE1 OSCE2 OSCB2
Ground.
resonance circuit connect terminals.
OSCGND
LPFN
LPFP
loop filter connect terminals.
AGCLPF
detection block filter. Connect with 0.01 capacitor.
AGCCNT
detection block gain adjustment.
CXA3218N
Symbol
Typical voltage
Equivalent circuit
Description
OPAINP
detection block input.
OPAINN
OPAOUT
detection block digital output.
IFAGC
detection block analog output.
CXA3218N
Electrical Characteristics Characteristics
Item Current consumption AGC-1 High output voltage AGC-1 output voltage AGC-2 High output voltage AGC-2 output voltage AGC-MTRX High output voltage AGC-MTRX output voltage VCODR output voltage VCODR driver current capacitance VREG output voltage leak current
(Ta=25 VCC=5 Electrical Characteristics Measurement Circuit.)
Symbol VAGC1H VAGC1L Conditions When signal input Vin=-60 dBm, 26=3.0 27=2.5 Vin=-10 26=3.0 27=2.5 Vin=-60 dBm, 26=3.0 Vin=-10 dBm, 26=3.0 27=2.5 Vin=-60 dBm, 26=3.0 27=2.5 input Load resistance RL=1 Min. KEYEDIN=0.5 Typ. 4.15 Max. Unit
VAGC2H Vin=-10 dBm, 26=3.0 VAGC2L VMTRH VMTRL VVCD IVCD VREG
Characteristics (AGC)
Item input frequency input level change point (input level) control sensitivity adjustment sensitivity control sensitivity adjustment sensitivity AGC-MTRX control sensitivity
(Ta=25 VCC=5 Electrical Characteristics Measurement Circuit.)
Symbol AGC1 AGC1/V AGC2 AGC2/V MTRX amplitude balance input 26=2.5 27=2.5 Slope variation Variation change point/ variation Slope variation Variation change point/ variation Slope variation Conditions Min. Typ. -0.8 Max. V/dB dB/V mV/dB dB/V V/dB Unit
CXA3218N
Characteristics (PLL)
Item 25-1 25-2 variation sensitivity oscillation frequency capture range DETOUT level DETOUT level variable range DETOUT level variable range GCONT adjustment sensitivity DETOUT frequency response MHz)
(Ta=25 VCC=5 Electrical Characteristics Measurement Circuit.)
Symbol fosc VOUT VPdB VMdB VOUT VOUTf positive/negative polarities Dev.=17 MHzpp, 9=2.7 VOUT=0 9=+0.5 VOUT=0 9=-0.5 Output level/Pin variation MHz/1 Conditions 0.60 0.68 0.76 Min. Typ. Max. Vp-p dB/V Unit MHz/V
Varies according external constant (coil, varicap). This characteristic NTSC, works PAL.
Characteristics (Video)
Item output output beat suppression level output
(Ta=25 VCC=5 Electrical Characteristics Measurement Circuit.)
Symbol input input input input Conditions Min. Typ. Max. Unit
Varies according external constant (coil, varicap).
characteristics (AFT)
Item offset adjustment sensitivity dead zone width AFTUP/AFTDOWN AFTUP/AFTDOWN High
(Ta=25 VCC=5 Electrical Characteristics Measurement Circuit.)
Symbol fAFT/V fAFT/D AFTL AFTH Conditions variation/Pin variation Min. Typ. Max. Unit MHz/V
CXA3218N
Description Operation CXA3218N consists following four function blocks. First, signal flow explained briefly, followed functions each block. circuit demodulation circuit Detection signal amplification circuit circuit differential signal input (Pins passes through circuit signal level then input demodulation circuit. demodulated signal demodulation circuit then input DETAMP circuit circuit. circuit detects frequency error signal detection output voltage value, outputs command external frequency conversion circuits order correct local frequency. circuit differential signal input (Pins signal level circuit. capacitor which determines loop time constant connected AGCLPF (Pin 25), adjustment voltage (2nd AGC) output setting level applied AGCCNT (Pin 26). control voltage output from IFAGC (Pin 30). starting level adjustment voltage applied OPAINP (Pin 27). MTRXAGC (Pin output input through capacitor. IFAGC (Pin output input OPAINN (Pin through resistor, control voltage output from OPAOUT (Pin 29). this time, IFAGC (Pin output used linear portion against input level. (See Example Representative Characteristics.) voltage negative characteristics OPAOUT (Pin output control voltage IFAGC (Pin output control voltage output from MTRXAGC (Pin
MTRXAGC
AGCCNT
AGCLPF
signal input
IFAGC
OPAINN
0.1µF
circuit AGCAMP BOTH-SIDE DETECTION
OPAOUT
OPAINP
circuit
COMP
COMP
demodulator
CXA3218N
demodulation circuit demodulation circuit demodulator which consists oscillator (OSC.), phase discriminator DCAMP. oscillator resonance circuit connected OSCB1 OSCB2 (Pins loop filter LPFN (Pin LPFP (Pin 24). DCAMP differential output comes from VCODR2 (Pin VCODR1 (Pin 17), this output used drive voltage varicap that comprises oscillator. Detection signal amplification circuit signal which detected demodulation circuit amplified DETAMP circuit then output from DETOUT (Pin gain this amplification circuit adjusted voltage applied GCONT (Pin circuit circuit detects frequency error signal voltage displacement from demodulation signal input block, outputs values High from AFTDWN (Pin AFTUP (Pin 11). High indicates frequency change command (active-High). Furthermore, High output from both pins indicates dead zone. capacitor connected (Pin keyed pulse keyed input KEYEDIN (Pin 13). KEYEDIN (Pin voltage should during mean value. sample-and-hold capacitors connected (Pin (Pin 15). Apply offset adjustment voltage OFFSET (Pin cancel effects offset Other capacitor connected eliminate regulator voltage noise VREG (Pin this output reference voltage internal adjustment.
-10-
Diameter Diameter Number wire coil turns wire 1.5T 1.5T 5.5T
VC:HVU-358
100k
0.01µ 100p LPFP IFAGC LPFN OSCB2 OSCE2 OSCE1 OPAINN OPAINP OPAOUT AGCLPF AGCCNT OSCB1 OSCGND
100k
VCODR1
VCODR2
Electrical Characteristics Measurement Circuit
KEYEDIN
MTRXAGC
OFFSET
DETOUT
VREG
GCONT
AFTDWN
0.1µ
AFTUP
0.1µ
100k
DETOUT
100k CXA3218N
0.1µ
-11-
CXA3218N
VC:HVU-358
100k
0.01µ 100p OSCE2 OSCE1 OSCB1 VCODR1 OSCGND VCODR2 LPFP IFAGC LPFN OPAINN OPAINP OPAOUT AGCCNT AGCLPF OSCB2
100k
Electrical Characteristics Measurement Circuit
CXA3218N
KEYEDIN
MTRXAGC
OFFSET
DETOUT
VREG
GCONT
AFTDWN
AFTUP
0.1µ
100k 100k
1.5k
360k 470p 100k 1.5k
2SC2785 4.5M
LH0032 VIDEO 9.1k
-15V
Diameter Diameter Number wire coil turns wire 1.5T 1.5T 5.5T
0.1µ
0.1µ
-12-
CXA3218N
VC:HVU-358 OPAOUT 0.01µ 100p OSCE2 OSCE1 OSCB1 OSCGND VCODR1 VCODR2 LPFP IFAGC LPFN OPAINN OPAINP OPAOUT AGCCNT AGCLPF OSCB2
Application Circuit
100k
100k
CXA3218N
KEYEDIN
MTRXAGC
OFFSET
DETOUT
VREG
GCONT
AFTDWN
AFTUP
0.1µ
100k 100k
DETOUT
MTRXAGC
IFIN
DETOUT
AFTDWN AFTUP
KEYEDIN
Diameter Diameter Number wire coil turns wire 1.5T 1.5T 5.5T
CXA3218N
Application circuits shown typical examples illustrating operation devices. Sony cannot assume responsibility problems arising these circuits infringement third party patent other right same.
0.1µ
0.1µ
-13-
CXA3218N
Example Representative Characteristics
AGCDET characteristics (AGCCNT) =2.5V (OPAINP) =2.5V MTRXAGC IFAGC OPAOUT (IFAGC) output level Pins output level 26=2V 26=3V 26=2.5V IFAGC characteristics
Input level (dBm)
Input level (dBm)
AFTDWN/AFTUP output level
characteristics (OFFSET) (KEYEDIN) AFTUP AFTDWN fo-Frequency (MHz)
offset adjustment sensitivity characteristics Input level=-40dBm fo=dead zone center frequency
AFTDWN 399.5 AFTUP 400.5
Input frequency (MHz)
input voltage
voltage characteristics (OFFSET) (KEYEDIN)
voltage characteristics (OFFSET) (KEYEDIN)
SH1/SH2 output level
output level
398.5
399.5
400.5
401.5
Input frequency (MHz)
Input frequency (MHz)
-14-
CXA3218N
lock characteristics VCODR1 output level DETOUT level (dB) Input frequency (MHz) Input level=-40dBm -0.5 -1.5 -2.5
GCONT adjustment sensitivity Input level=-40dBm Video signal Output level adjust when 9=2.7V
2.45
2.95
input voltage
DETOUT characteristics Supply current (mA) DETOUT level (dB) -0.5 -1.5 (GCONT) =2.7V
Supply current Supply voltage input
Supply voltage
Output frequency (MHz)
-15-
CXA3218N
Package Outline
Unit
30PIN SSOP (PLASTIC)
1.25
0.10
0.22 0.05 0.13
0.65 0.05 0.15 0.02
NOTE: Dimension does include mold protrusion. DETAIL
PACKAGE STRUCTURE
PACKAGE MATERIAL SONY CODE EIAJ CODE JEDEC CODE SSOP-30P-L01 SSOP030-P-0056 LEAD TREATMENT LEAD MATERIAL PACKAGE MASS EPOXY RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 0.1g
NOTE PALLADIUM PLATING This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame).
-16-
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